ALTOPATCH Features 24 sets of 1/4" TRS jack sockets offering a reliable, low-loss solution for interconnecting equipment in the studio or out on the road Compact 1U rack-mount Four connection modes: Parallel, Half-Normalled, Normalled and De-Normalled Signal flow-chart on the upper side of the case Connection mode can be set independently for each jack pair High-quality components and exceptionally rugged construction